Front

What type of rock mainly makes up oceanic crust?

Back

Basalt is the primary rock type that makes up oceanic crust.

Front

Approximately when did the supercontinent Pangaea begin to break apart?

Back

Pangaea began to break apart about 200 million years ago.

Front

What does the distribution of Mesosaurus fossils on South America and Africa suggest?

Back

The distribution suggests that South America and Africa were once connected to one another.

Front

What type of plate boundary are subduction zones associated with?

Back

Subduction zones are associated with convergent plate boundaries.

Front

Who is best known for the hypothesis of continental drift?

Back

Alfred Wegener is best known for the hypothesis of continental drift.

Front

What is the theory of plate tectonics?

Back

The theory of plate tectonics explains the movement of Earth's lithospheric plates and how they interact at their boundaries.

Front

What are the three main types of plate boundaries?

Back

The three main types of plate boundaries are convergent, divergent, and transform boundaries.

Front

What occurs at a divergent plate boundary?

Back

At a divergent plate boundary, tectonic plates move apart, leading to the formation of new crust, often seen at mid-ocean ridges.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle.

Front

What geological features are commonly formed at convergent boundaries?

Back

Convergent boundaries often form mountain ranges, deep ocean trenches, and volcanic arcs.